See Scope - OpenESQL SQL Compiler Directive Options and Scope - HCOSS SQL Compiler Directive Options for more information.
When SQL(PROCOB) is set, Oracle date and timestamp result types fetched into PIC X(n) host variables are truncated without warning.
When SQL(PROCOB) is set, OpenESQL error codes in the SQLCA are converted to Pro*COBOL-compatible error codes. This is controlled by the mfpcocds.txt file, located in %ProgramData%\Micro Focus\SQLCODES by default.